GAX Professional v2.2
Pick colors from every part of the screen; GAX automatically detects the palette of various windows on the screen, therefor sampling the color with 100% accuracy. Included are a screen ruler and a screen-capturing tool with a variety of ways to capture parts from the screen or the entire screen.
http://www.dolphiq-sd.com/

Shreeji Screens & Filters
India. Manufacturers of precision woven mesh fabrics for filtration and screen printing applications, from polyamide monofilament. Also, stockists of polyester bolting cloth, and manufacturers of pre-stretched frames for screen printing. Technical specifications.
http://www.shreejifilters.com/

Tyder Ltd
Provides digital filter design software which can produce specialised filters e.g. Windowed FFT, Optimal FIR filters, and IIR filters.
http://www.tyder.com/

Simple Filters
Easy to use filters for enhancing Photoshop and Paintshop Pro - Not available anywhere else!!!
http://www.btinternet.com/~cateran/simple/

Simple Filters
Easy to use filters for enhancing Photoshop and Paintshop Pro - Not available anywhere else!!!
http://www.btinternet.com/~cateran/simple/

OPT Hellas Custom Frequency Control Components
Manufacturers crystals, crystal filters, lc filters rf and microwave filters. Descriptions and catalogs and international sales network.
http://www.opthellas.com

NuBridge Company Limited
NuBridge Company Ltd. creates and markets, high-value, quality designed, computer accessories and gifts.
http://www.nubridge.com

Reclaim filters and system, Inc.
Reclaim Filters brings you reliable and economical solution to your basic filtration needs. Clean and recover your water with our filters and filter systems. Based in Wake Forest North Carolina
http://www.waterreclaim.com/

Kemo Signal Filters
Electronic filters, a full range of systems and modules
http://www.kemo.com/

Lee Filters
High quality camera filters, lighting filters, gobos, and other studio-related products. Camera Bellows.
http://www.leefilters.com/